You can configure multiple application servers to use the Communications Enabled Applications (CEA) capability in a cluster environment to balance workload demands.
To scale to two or more application servers running CEA, you must create a cluster that includes each application server. Clusters are groups of servers that are managed together and participate in workload management. You must use proxy servers to distribute the requests to the CEA application servers, but not IBM® HTTP Servers. CEA is implemented as a converged application that combines both HTTP and session initiation protocol (SIP) protocols. However, IBM HTTP Server is limited to handling the HTTP protocol. The proxy server is a converged proxy so it handles both HTTP and SIP protocols.
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